enable the pulley rigidly fixed to the shaft
avoid slipping of belt from pulley
make the pleasant appearance of pulley
make the drive more sturdy
fed by gravity feed
force feed with the help of pump
throwing away of lubricant by the crank to other parts of engine
supplied by wick
35 degree to 45 degree
45 degree to 55 degree
20 degree to 30 degree
15 degree to 20 degree
the are anti-friction bearings
needs minimum / no lubrication
available in standard sizes
All the above
ring lubricator
grease gun
tell tale lubricator
wick feed lubricator
